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FOR REFERENCES ONLY
Power circuit
Terminal symbol
R/L1,S/L2,T/L3
U/T1,V/T2,W/T3
PA/+,PB
The arrangements of power circuit terminals are different from each range.
Refer to section 1.3.3.1) for details.
2.3.2
Control circuit terminals
The control circuit terminal board is common to all equipment.
Regarding to the function and specification of each terminal, please refer to the following table.
Refer to section 1.3.3.3) about the arrangement of control circuit terminals.
Control circuit terminals
Terminal
Input /
symbol
output
Shorting across F-CC causes
forward rotation; open causes slow-
down and stop. (When Standby ST
F
Input
is always ON)
3 different functions can be
assigned.
Shorting across R-CC causes
reverse rotation; open causes slow-
down and stop. (When Standby ST
R
Input
is always ON)
3 different functions can be
assigned.
Shorting across S1-CC causes
preset speed operation.
S1
Input
2 different functions can be
assigned.
Shorting across S2-CC causes
preset speed operation.
S2
Input
2 different functions can be
assigned.
VFNC3C ENGLISH MANUAL
Terminal function
Grounding terminal for connecting inverter. There are 3 terminals in total.
400V class: three-phase 380 to 460V-50/60Hz
Connect to a (three-phase induction) motor.
Connect to braking resistors.
Change parameters ,,, if necessary.
Electrical
Function
specifications
No voltage
logic input
24Vdc-5mA or less
*Sink/Source
selectable using
parameter
(In case of sink
logic is the left)
B-7
NOT SUBJECTED FOR RESALE
Inverter internal circuits
+24V
P24
2.2k
F
470
R
2.2k
S1
S2
CC
2
OFF:
External
24V
ON:
Sink
OFF:
Source
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